Cardiovascular rhythms in the 0.15-Hz band: common origin of identical phenomena in man and dog in the reticular formation of the brain stem?

Selected examples from experiments in humans and dogs with time series of reticular neurons, respiration, arterial blood pressure and cutaneous forehead blood content fluctuations were analysed using multiscaled time-frequency distribution, post-event-scan and pointwise transinformation. We found in...

Full description

Saved in:
Bibliographic Details
Published in:Pflügers Archiv 2004-09, Vol.448 (6), p.579-591
Main Authors: Perlitz, Volker, Lambertz, Manfred, Cotuk, Birol, Grebe, Reinhard, Vandenhouten, Ralf, Flatten, Guido, Petzold, Ernst Richard, Schmid-Schönbein, Holger, Langhorst, Peter
Format: Article
Language:English
Subjects:
Animals
Blood Pressure
Cardiovascular Physiological Phenomena
Dogs
Electrophysiology
Female
Frequency distribution
Humans
Male
Medulla Oblongata - physiology
Microcirculation
Middle Aged
Neurons - physiology
Periodicity
Photoplethysmography
Relaxation Therapy
Respiratory Physiological Phenomena
Reticular Formation - physiology
Skin - blood supply
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Selected examples from experiments in humans and dogs with time series of reticular neurons, respiration, arterial blood pressure and cutaneous forehead blood content fluctuations were analysed using multiscaled time-frequency distribution, post-event-scan and pointwise transinformation. We found in both experiments a "0.15-Hz rhythm" exhibiting periods of spindle waves (increasing and decreasing amplitudes), phase synchronized with respiration at 1:2 and 1:1 integer number ratios. At times of wave-epochs and n:m phase synchronization, the 0.15-Hz rhythm appeared in heart rate and arterial blood pressure. As phase synchronization of the 0.15-Hz rhythm with respiration was established at a 1:1 integer number ratio, all cardiovascular-respiratory oscillations were synchronized at 0.15 Hz. Analysis of a canine experiment supplied evidence that the emergence of the 0.15-Hz rhythm and n:m phase synchronization appears to result from a decline in the level of the general activity of the organism associated with a decline in the level of activity of reticular neurons in the lower brainstem network. These findings corroborate the notion of the 0.15-Hz rhythm as a marker of the "trophotropic mode of operation" first introduced by W.R. Hess.
ISSN:0031-6768
1432-2013
DOI:10.1007/s00424-004-1291-4